Apparatus for separating pulp fibers from pigments, size, filler, and other impurities.



B. W. PETSGHE. APPARATUS FOR SEPARATING PULP FIBERS FROM PIGMENTS, SIZE FILLER, AND OTHER IMPURITIES.

APPLICATION TILED OUT. 28, 1909.

955,990. Patented Apr.26, 1910.

B. W. PETSGHE.

APPARATUS FOR SEPARATING PULP FIBERS PROM PIGMENTS, SIZE, FILLER,

AND OTHER IMPURITIES.

APPLIOATION FILED 001'. as, 1909.

Patented Apr. 26, 1910.

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B. W. PETSGHE.

APPARATUS FOR SEPARATING PULP FIBERS FROM PIGMENTS, SIZE, FILLER,

AND OTHER IMPURITIES. APPLIOATION FILED 0012a, 1909.

3 SHEETS-$11112! 3.

' elM I his aHoznu S Patented A l 26, 1910.

. Pn'rsonn, a citizen of the United States, and j Fibers from Pi BISMARCK WM. PETSCHE,

nrrm'rns FOR \SEPARATING 955,990. Original application filed May 7, 1909,

To all whom it ma/y concern:

Be it known that I, BIsMARoK WILLIAM a resident of Yonkers, county of Westfchester, and State of New York, have invented certain new and useful Improvements in Apparatus for Separating Pulp ents, Size, Filler, and

-' other Impurities, of which, the following is like, a boring thereto as the result of the a full, clear, and exact specification, reference being had to the accompanying drawing, wherein iglire 1' is. aplan view, and Fig. 2 a longitudinal sectional view of the apparatus; Fig. 3 a perspective view of the upper trough, the (coarse) screen andgutter; and Fig. 4 a similar view of the lower trough, the separating (finer) screen and of the series of sprinklers arranged in connection therewith.

My invention relates to apparatus for treating pulped waste paper, articularly such as newspapers, books and t e like, for the purpose of separating the pulp fibers, contained therein, from the impurities, particularl printers ink, size, filler and the previous use of such papers, and consists in a devising the apparatus as hereinafter de- G tofore designed for carrying on such a scribed and claimed. The apparatus hereprocess, were either filters, developed upon the erroneous theory that the impurities, adhering to, or mixed; with, the pulp fibers, obtained by disintegrating of such waste papers, may be removed by filtration, or washers, provided with devices for'floating and carrying these substances away by an overflow, it being assumed that the pulp fibers will settle on'the' bottom and that the pigments of the ink, the filler, size and other impurities will be carried away with the overflow. In some processes both methods were employed. Inasmuch, however, as it is practically impossible to se aratethe pulp fibers from such impurities. y any known method of filtration, and inasmuch as the Specific gravity of pulp fibers is not greater than that of the pigments of the ink, the filler and size used in paper making, it is not feasible, to my best knowledge and belief, to recover really clean pulp by such treatments of pulped waste papers, and no one has yet succeeded to carry on any of such filtering or floating processes successspeoifioation of Letters Patent.

Serial No. 494,711. Divided and this application flledoctober 28,

1909. Serial No. 525,049.

O'F YONKERS, NEW YORK.

PULP FIBERS FROM PIG'MEN'ES, SIZE, FILLER, AND OTHER IMPURITIES.

Patented Apr. 26, 1910.

size and filler by screening, the operation being performed by streams of water acting upon the pulped material to pass it over the screens, the impurities being driven through the screens and the purified fibers conveyed over the screens to a" receptacle, and the apparatus, forming the subject- .matter of this application, is designed with the object in view to carry on the process ina commercially suitable and economical way.

The a paratus consists of the troughs A, B and 8; tank D, screens E and F and sprinklers G and H, arranged substantially as shown. The screen E is a comparatively coarse screen, having eighteen totwentyfour meshes to an inch, and is preferab y fixed in the trough B in the position as shown in the drawing. It terminates in the lgutter e, which, as shown in Fig. 1, extends eyond the side wall of the trough B and over the tank D, located underneath. Alongsideof the trough B, a water-pipe W, con-' necting with'a tanktor pump, not shown, is suitably supported, and sprinkler-pipes G, turnably connected thereto, have their other ends also turnably supported in collars, q, s'ecuredto the opposite wall of trough B. In each of these pipes G, a suitable number of nozzles a are set to discharge streams of Water upon the screen E at an angle of from 30 to 45 to its plane. It is not essential,

but it is advisable to mount the sprinklerpipes G turnably, so thatthean 1e, under -which the streams of water are 'ischarged from the nbzzles a upon the screen E, may

be varied. Trough C is set below the trough B, and the screen F, which is a fine screen of.

or lower the screen andpawl r, engaging ..or to ot with the ratchet-wheel s, secured to the end of roll n, holds it in position. p

The water-pipe W is flexibly connected (or hin ed) at the joint Z to the pipe W, er source of supply of water, and the sprinkler-pipes H, turnably" connected therewith, havetheir other ends also turnably secured in frame H. The rear end of v this frame is pivoted at a point in line with .is also provided with means for joint Z, and its other end, and the free end of the water-pipe W, are connected by chains 32 toroller 'n',-pillowed in' suitable bearings t, set on the side walls of the trough C, and supported by brackets t. Roller n rigidl atit is tachin thereto the handle whereb g g W' and rotated to raise or lower pipe Q sprinkler-pipes H, relatively to the screen.

F. Pawl r, engaging with the ratchetwheel 8', secured to the end of roller 11.", holds the pipe NV and sprinkler pipes H in position. Sprinkler-pipes H' are also pro vided w th nozzles 12 and by turning them,

the angle, under which the streams of water strike against the screen F, may bevaried, v

to accelerate or retard the motion of the",

pulped material over this screen.

At the forward end of trough C, a trough l or gutter I is located, intowhich the pulp fibers, separated from the impurities, are delivered. The bottom of trough C slopes toward the rear end thereof, and an opening 0 is provided in its rear end wall for the outflow of the water, and of the impurities separated from the fibers into the tank D,

,set underneath it. This tank D is providedwith an overflow J and ,a discharge outletpipe f, whereina stop-cock is set. The bottom of vtank D is prefera ly made sloping, and the outlet-pipe f is set in its lowest point. l

The'separating process is carried on in this apparatus as follows: The pulped waste papers, after having been'subjected, in a" chest, where the pulped material is prepared,

to the actlon of the mechanical agitator and the alkaline solution, for a sufiicienttimeto destro the adhesity of the oil of the ink and 0 such size, filler, etc., or to reduce it to an extent as necessary for separatin these impurities from the fi ers of. the pu are pumped into the trough A, from where the material slides, or flows, onto the coarse screen E. By the streams of water, -dis-. charged upon it from. the nozzles a of the sprinkler-pipes G, at an angle .ap ro'xi .mately of from 30 to 45, the pulpe material ispropelled over the screen and driven through it, upon the bottom ofv-trough B, such coarse particles of the stock, as might not have been sufliciently pulped in the beat--- ing' engines, and all foreign coarse 'sub-' stances as may be containe' in the pulped material, being carried over the screen E into the gutter e and finally delivered into than'water impurities settle, while the overflow d carries-away such as float on the ings" v (sloping toward trough I), to prevent the tank D. finer particles of the pulped material that-passed through the screen E, are conveyed, in a rather 'ra id flow, upon the screen F. The streams 0 water, ejected from the nozzles b of sprinkler-pipes H, propel and rollover the pulped material toward the farther, open end ofscreen F. The impurities, such as particles of the ink pigments, size, filler, etc., are thereby separated from the fibers of the phlp,-.z being driven through the. meshes of the screen to the bottom of trough C, while the purified pulp fibers, also separated from each other,

are carried over it into the trough I, by

which they are conveyed to where pulp is to be accumulated or used. The partlcles ofv ink pigment, size, etc., floating on, or driven by, the water, pass through the opening 0 into the tank D, where the heavier water. The sediment in tank D is discharged, from time to time, throughtlie' bottom outlet 1, and the clarified water, remaining in the tank, may be used over'again forthe beatin engines.

'Norinally, t e screen F is the .gutter I at almost the same angle of descent as the bottom of thetrough B toward it, but if the pulp fibers, delivered into the gutter I should appear not to be fully separated from the impurities, or absolutely clean, it would indicate that the pulp was progressed too rapidly over it. To remedy this, the free end of the screen F is raised by turning roller 11., whereby the screen F is brought into a more horizontal position and the process of the pulped material over it is retarded. If this is done, it may also be necessary to raise the sprinkler-pipes H,

dischar ed'from nozzles 6 upon the pul ed. materia is adjusted by turning sprinkler pipes H correspondingly. This may be done. by hand, or suitable handles'may be secured to these sprinkler-pipes. It is better to start the operation 'of the apparatus, with the screen F 1n the'position shown in the draw-f waste of water, and to raise the freee'ndfof the screen adually, if it be found necessary to do so. his treatment of the pulped ma-* terial for the recoveryof the pulp-fibers requires from. three to five times its weight watermay be recovered for use in the beating-engines. ,Thequantity of cleaned pulp,

recovered in this process, 1s hardly any less, in proportion to the quantity. of the waste materlal'pulped' 1n the beater, than what is obtained in the ordinary p l i process a and the costs of the process are 0 y a smallfraction over and above the costs of the or dmary pulp ng process of such materials.

sloping toward by turning roll n correspondingly. The angle, at which the streams of waterare The ul recovered by this process requires no b eac ing, bein as clean and white as it was origina ly, an while it may be used for manufacture of print papers, the same as fresh sulfite pulp, it is particularly suitable for manufacture of pulp boards, for vat lining of chip and straw boards, and for manufacture of combination and coated boards of all kinds.

claim as my invention 1. An apparatus for separating pulp fibers from igments, size, filler and other lmpurities, t e apparatus consisting of a trough, a screen in' the trough; a series of waterpipes, turnably mounted above the screen and provided with perforations, arranged to deliver streams of water upon the screen at a more or less acute angle to its plane by turning the water pipes accordingly; means connectin the water-pipes with a supply of water, ans means for conveying pulped material upon the screen.

2. An apparatus for separating pulp fibers from pigments, size, filler and other lmpurities, consisting of a trough, a screen set movably in the'trough; a series of waterpipes, movably supported above the screen, a series of nozzles set in the water-pipes, means for raising and lowerin the screen and the wateripes and means or changing the position 0 the nozzles relatively to the plane of the screen; means connecting the water-pipes with a supply of water and means for delivery of pulped material upon the screen.

3. An apparatus for separating pulp fibers from pigments, size, filler and other impurities, consisting of a series of troughs, a coarse and a fine screen arranged successively in the troughs; sprinklers, set above the screens'and adapted to discharge streams of water thereupon at an angle to their planes; means connecting the sprinklers with a sup ly ofwater, means for conveyin the pulpe materialinto the apparatus and means for removing the impurities, separated from the fibers of the pulp, from the ap aratus, substantially as herein shown and described.

4. An apparatus for separating pulp fibersfrom pigments, size, filler and other impurities, consistin of a series of troughs, a coarse screen xed above the first trough of the series and a fine screen set movably above the next trough and. means for delivery of pulped material upon the coarse screen; a series of water-pipes movably supported above the fine screen, a series of nozzles set in the water-pipes, means for-raising and lowering the screen and the water pipes and for changing the position of the nozzles relatively to the plane of the screen;

means connecting the water-pipes with a supply of water, and means for removing the impurities from underneath the screen.

BISMARCK WM. PETSOHE.

Witnesses p R. A. PIPER, V. BRAUN. 

